Merge branch 'logger_cleanup' into 'master'

beat/backend/python/data.py

beat/backend/python/data_loaders.py

beat/backend/python/execution/database.py

beat/backend/python/execution/messagehandlers.py

beat/backend/python/inputs.py

beat/backend/python/outputs.py

beat/backend/python/scripts/execute.py

beat/backend/python/test/test_databases_provider.py

beat/backend/python/test/test_dbexecutor.py

beat/backend/python/test/test_helpers.py

beat/backend/python/test/test_loop_executor.py

beat/backend/python/test/test_message_handler.py